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Study of Static Adsorption Capacity of ACF for Xenon at 201 K

Chemical Research in Chinese Universities 2002年第2期18卷 216-220页

作者： WANG Ya long ZHANG Hai tao WANG Xu hui ZHANG Li xing CHEN Li yun XIE Jin chuan Northwest Institute of Nuclear Technology Xian 710024P.R.China

The static adsorption performances of a series of active carbon fiber(ACF)for xenon at 201 K were measured with a model ASAP2010M specific surface area and aperture distribution instrument by changing the working gas of instrument from N 2 to Xenon. Compared with grain active carbon(GAC): (1) the adsorption performance of Viscose based ACF(VACF) adsorbents is better than that of GAC; (2) owing to the difference of aperture distribution, the adsorption performance of ACF with different radicales is different under the same experiment conditions though the specific surface area is similar; (3) there is no definite relationship between adsorption performance and specific surface area; (4) the VACF A2 is the superior xenon adsorbent at the experimental temperature.

关键词： active carbon fiber CTBT Xenon Static adsorption Adsorptive capacity Adsorptive velocity

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Static Adsorption of Xenon on ACF at 257 K

引用

Journal of Materials Science & Technology 2002年第6期18卷 522-526页

作者： Zhang, HT Wang, YL Wang, XH Zhang, LX Chen, LY NW Inst Nucl Technol Xian 710024 Peoples R China

The static adsorption of xenon on active carbon fiber (ACF) at 257 K was measured with ASAP2010 specific surface area and pore diameter distribution instrument by changing the working gas from nitrogen to xenon. Compared with grain activated carbon (GAC), the results were as follows: (1) The adsorption performance of Viscose-based ACF (VACF-As) was the best among all absorbents tested. VACF-A3 was the superior xenon absorbent. The performance of pitch-based ACF (PACF-Cs) approached that of GAC, (2) Due to the difference of aperture distribution, the adsorption performances of ACF with different radics were different under the same experiment conditions even though the specific surface area was similar, (3) There were some differences of adsorptive capacity among ACF absorbents which had the same radic, however there was not definite relationship between their specific surface area and adsorptive capacity, (4) The adsorption of xenon on all kinds of ACF agrees with Langmuir equation, (5) The adsorptive curves can be fitted with a binomial equation.

关键词： active carbon fiber CTBT Xenon Adsorption

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